2013-05-202013-05-202013-05-20https://hdl.handle.net/10365/22914Photographic image. Black and white. Image of Arthur Humann and Harry Grenz on atop threshing machinery. Two men are identified as (L to R): Arthur Humman and Harry Grenz. Dated 1963. Courtesy of Susan Grenz Collection, 2011.08, GRHC.Photographic image. Black and white. Image of Arthur Humann and Harry Grenz on atop threshing machinery. Two men are identified as (L to R): Arthur Humman and Harry Grenz. Dated 1963. Courtesy of Susan Grenz Collection, 2011.08, GRHC.